Exergy efficiency calculation of energy intensive systems |
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| Affiliation: | 1. Odessa State Politechnical University, 65044, Ave. Shevchenko 1, Odessa, Ukraine;2. U.S. Naval Academy, Mechanical Engineering Department, Annapolis, MD 21402-5000, USA;3. Odessa State Academy of Refrigeration, 65100, Dvorjankaja Str. 1/3, Odessa, Ukraine;1. Department of Refining, Egyptian Petroleum Research Institute (EPRI), 1 Ahmed El Zomour St., Nasr City, PO Box 11727, Cairo, Egypt;2. Department of Analytical, Egyptian Petroleum Research Institute (EPRI), 1 Ahmed El Zomour St., Nasr City, PO Box 11727, Cairo, Egypt;3. Catalysis Institute, Department of Chemical Engineering, Univerity of Cape Town, Private Bag X3, Rondebosch 7701, South Africa;1. LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias S/n, 4200-465 Porto, Portugal;2. Laboratory of Separation and Reaction Engineering–Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal;1. School of Engineering, Indian Institute of Technology Mandi, Himachal Pradesh 175 001, India;2. Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600 036, India;1. Department of Mechanical Engineering, Federal Center of Technological Education of Rio de Janeiro, Angra dos Reis, RJ, 23953-030, Brazil;2. Department of Metallurgical Engineering, Federal Fluminense University of Rio de Janeiro, Volta Redonda, RJ, Brazil;3. Universitary Center of Volta Redonda, Volta Redonda, RJ, Brazil |
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| Abstract: | An innovative method for the exergy efficiency calculation of a complex energy-intensive system with arbitrary structures is described in this paper. The method is based on a novel general equation to calculate the total system exergy efficiency, and on an exergy flow graph proposed by the authors. This approach allows a user to obtain not only the exergy efficiency of the total system, but also to show the relationship between the exergy efficiency of an individual element and that of the whole system. An example employing the method to the thermodynamic exergy analysis of a power plant is provided. |
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